PSI Products wiring harnesses are covered under warranty by the original purchaser for up to one year from the date of purchase for defects in material and workmanship under normal use (excluding PCM/ECM’s). No products will be considered for warranty without a copy of the original purchase receipt showing the sellers name, address, and date of purchase. It is up to the buyer returning the product to PSI to initiate the warranty process. PSI is not responsible for loss of any vehicle component due to improper use of our product. PSI is not responsible for labor costs involved in removing, replacing, or diagnostics for the product for return. Our warranty is limited to the repair or replacement of the PSI products only.

Buyers will have 90 days from the original purchase date to return a product for a refund minus a 20% restocking fee, shipping is to be paid by the buyer. PSI retains the right to refuse refunds for custom (i.e. unique) modifications done to the harness at the request of the customer. PSI retains the right to refuse a refund if the customer has spliced/cut/modified a wiring harness in any way, rendering the harness ineffective. Buyers may exchange a harness that was ordered incorrectly within 30 days of the original purchase, buyer is to pay shipping, no restocking fee will apply. All products must be in like new condition and in the original packaging to be accepted for return.

All PSI PCM/ECM units are backed with a ONE YEAR WARRANTY (12 months from original purchase date) against defects in material or workmanship. The defective product will be replaced or repaired at no charge in either of two ways. This warranty does not cover accident, fire, flood, theft, and we are not responsible for damage resulting from electrical shorts, overcharging or other component defects in vehicle which causes damage or failure to unit. If the Vehicle Identification Number or Operating System has been changed or altered in any way the PCM is not covered under warranty and cannot be returned.

Any PCM/ECM that has been physically altered, painted, holes drilled, cut, etc. cannot be returned under any circumstance.

Info

PSI specializes in the design and manufacture of Standalone Wiring Harnesses for GM Gen II, III, and IV LS based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3 and LS7 Engines. In addition to wiring harnesses, you will find other components and kits for retrofitting older vehicles with these powertrains including PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion needs!